peach colored pill par/721 on front and 555 on bac

i was recently staying at a motel and i found these long peach color pills that look similar to xanax bars behind the dresser they can be broken into 3 pieces and has par 721 on the front and 555 on the back. email me at iiiiiiix_a_n_a_xiiiiiii@yahoo.com if you have any clue on what they might be. thanks